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Free Huawei H12-891 Practice Questions & Answers 2026 Part1 | HCIE-Datacom

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Question #1
Router HW cannot access hosts in the remote network, router HW runs routing protocols and only pings the remote file server address 105401 on router HW with extensionsthrough a default route remote network , the result of ping on the router HW is rendered as 'requ.' est time out', according to the above description, the error in the following analysis is ?
A. The next hop router for router HW did not reach the destination address
B. Router HW does not have a legitimate router to reach the destination address
C. Ping is successful, but congestion occurs on the path to the destination address
D. There is a firewall in the remote destination network, and the destination address can be reached without releasing ICMP traffic
E. ICMP packets, but the destination device fails to reply
View answer
Correct Answer: B
Question #2
In DU label advertisement mode, if the liberal label retention mode is used, the device reserves labels received from all the LDP peers regardless of whether the LDP peer is the optimal next hop for reaching the destination network.
A. rue
B. alse
View answer
Correct Answer: A
Question #3
In 6PE and 6VPE networking, no VPN instance needs to be created on PEs.
A. rue
B. alse
View answer
Correct Answer: A
Question #4
The basic header length of an IPv6 message is a fixed value.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #5
Among the routing policy tools commonly used by BGP, which ones can be used to filter routes?
A. filter-policy
B. Route-policy
C. lp extecommunity-filter
D. Traffic-policy
View answer
Correct Answer: ABC
Question #6
Which of the following IEEE standards is specific to Gigabit Ethernet?
A. 8023z
B. 8023ab
C. 8023ad
D. 8023af
View answer
Correct Answer: AB
Question #7
Link state information is isolated by default between different IS-IS processes on the same router.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #8
Regarding the FTP protocol, which of the descriptions below is correct?
A. In FTP Passive mode, the client completes the initialization of the TCP session for control and data
B. In FTP Active mode, the server tells the client which port it expects to send data on by commanding "PORT"
C. FTP always uses a TCP session to transmit control information and data information
D. FTP always uses TCP port 20 to establish a data session, and ICP port 21 to establish control will always use
E. FTP TCP port 21 to establish a data session, TCP port 20 to establish a control session
View answer
Correct Answer: A
Question #9
What of the following actions can enable fast failure detection on multicast networks?
A. Shorten the Holdtime of Join/Prune messages
B. Reduce the interval at which the interface sends Hello messages
C. A PIM BFD session is established between neighbors
D. Reduce the interval between sending Join/Prune messages
View answer
Correct Answer: B
Question #10
There are many ways to establish a cluster on a box switch, what methods does Huawei frame switch support to establish a cluster?
A. Set up via a cluster card on the motherboard
B. Establish
C. through the cluster daughter card on the interface board
D. through the service interface on the interface board Established by switching the cluster card on the network board
View answer
Correct Answer: ACD
Question #11
The following statement about OSPF route filtering is incorrect.( Single choice questions).
A. In the NSSA area, filtering for external route ingestion and advertisement can be configured on ASBR or ABR
B. Filtering for the three types of LSAs needs to be configured on the ABR across OSPF regions
C. Interface-based filtering of LSAs allows all LSAs in the inbound and outbound directions except grace LSAs
D. Based on the link state database, when calculating routes, the fiter-policy import command is used, which only affects the route addition in the route table, and has no effect on the OSPF link state database
View answer
Correct Answer: C
Question #12
You want only his telnet stream to be able to access the server (address 1011.100). Then, you add the following ACL to the routing ring: nule5pemit cp source ny destination 1011.100000destination-porteq 23 rule 1l0 deny ip source any destination any Then you apply that ACL to the ingress direction of the router's seial interface. What type of message is allowed to pass through the router?( Multiple choice questions).
A. A non-sharded, port 21-accessing packet
B. Non-first-sharded messages that use port 23 to access the server's message
C. Non-first-of-sharded messages to access other hosts
D. Non-first-of-its-kind packets that use port 21 to access the server
E. Packet answer for the first sharded or non-sharded, using port 23 to access the server
View answer
Correct Answer: BDE
Question #13
There is an As-path-filter.ip as-path-filter 1 permit*(100l400) $, which As-path-filter can match which of the following AS_PATH Attribute?( Confirmed).
A. 300 4200
B. 1234 1400
C. 3100
D. 100
View answer
Correct Answer: BCD
Question #14
Segment Routing (SR) is a technical architecture designed to forward data packets on a network based on the source routing paradigm. SR-MPLS, as its name suggests, is SR based on MPLS label forwarding.
A. True
B. False
View answer
Correct Answer: A
Question #15
Which of the following IEEE standards is specific to Gigabit Ethernet?
A. 8023z
B. 8023ab
C. 8023ad
D. 8023af
View answer
Correct Answer: AB
Question #16
Off-stem cross-domain VPN-Option B scenario, the following description is incorrect?
A. During the packet forwarding process, it is necessary to exchange the VPN's private network LSP on the
B. two ASBRs IP-EBGP neighbor relationships
C. The cross-domain VPN-Option B scheme is not limited by the number of interconnection links between ASBRs
D. The outer layer tag is exchanged between two ASBRs to vpnV4 routes
View answer
Correct Answer: D
Question #17
Firewall security policies have the condition for traffic matching to be ?( Multi-select)
A. apply
B. Source item security zone
C. Source item IP address
D. Message length
View answer
Correct Answer: ABC
Question #18
In a scenario where a VXLAN tunnel is dynamically established through BGP EVPN, which of the following command needs to be run on the VBDIF interface to enable the VTEP peer to generate BGP EVPN Type 2 routes based on ARP information of the local terminal?
A. mac-address xxxx-xxxx-xxxx
B. arp-proxy enable
C. arp collect host enable
D. arp distribute-gateway enable
View answer
Correct Answer: C
Question #19
The following description of the TTL in the MPLS Header is correct:
A. A TTL that acts like an IP header and is used to prevent message loops
B. To control label distribution
C. Limit LSR
D. Control of upstream devices for label distribution
View answer
Correct Answer: A
Question #20
The most effective way to view device warnings through the CLI is ?
A. Display alarm
B. Display current-configuration
C. Display interface brief
D. Display clock
View answer
Correct Answer: A
Question #21
The switch can suppress traffic by suppressing traffic and extremely other failures can affect operations, which of the following traffic suppression configurations is the wrong configuration
A. [Quidway] wan 10 [Quidway-wan10] multicast-suppression 1000 [Quidway-van10] quit
B. [Qudway ineface gigabtethemnet /0'1[Quidway-GigabitEfthemetO0/O/1]multicast-suppression 80TQuidway- GigabitEthernet0/0/1]quit
C. Quidway inteface gigabiethenet ou0/1[Quidway-GigabtEthernet/0/1J, broadcast-suppression 80 IQuidway-GigabitEthernet//1]Jqut
D. [Quidway] icmp rate-limit enable [Quidway] icmp rate-limit total threshold 20
E. [Quidway ] wan 10 [Quidway-wani0] broadcast-suppression 1000 [Quidway-van10] quit
View answer
Correct Answer: A
Question #22
The means of the LAND attack is that the attacker sends an SVN packet message with the same source and destination addresses to the target host, the source port and the destination port are the same, and the receiver waits for the final ACK packet to be sent , the connection is always in a semi - connected state, resulting in a full limited TCP reception Waste of resources
A. True
B. False
View answer
Correct Answer: A
Question #23
The following statement about IS-IS (IPv6) is correct?
A. In order to support the processing and calculation of IPv6 routes, IS-IS has added TLV232 and 236
B. By default, IS-IS has the multi-topology feature turned on
C. IS-IS works at the data link layer and only needs to add a new TLV to support IPv6
D. In order to support the processing and calculation of IPv6 routes, IS-IS has added NLPID to the 129 TLV
View answer
Correct Answer: ACD
Question #24
The DHCP protocol assigns to clients--some TCPIP-related parameter information--in the process DHCP defines a variety of messages that are encapsulated at the transport layer :(sortic).
A. PPP package
B. IP encapsulation
C. TCP Encapsulation
D. UDP Encapsulation
View answer
Correct Answer: D
Question #25
VLAN-based MAC address flapping detection is configured. If MAC address flapping occurs, actions to be taken on an interface can be configured as required. Which of the following actions cannot be configured?
A. Traffic filtering
B. Alarm sending
C. MAC address blocking
D. Interface blocking
View answer
Correct Answer: A
Question #26
The following statement about OSPF route filtering is incorrect.( Single choice questions).
A. In the NSSA area, filtering for external route ingestion and advertisement can be configured on ASBR or ABR
B. Filtering for the three types of LSAs needs to be configured on the ABR across OSPF regions
C. Interface-based filtering of LSAs allows all LSAs in the inbound and outbound directions except grace LSAs
D. Based on the link state database, when calculating routes, the fiter-policy import command is used, which only affects the route addition in the route table, and has no effect on the OSPF link state database
View answer
Correct Answer: C
Question #27
Regarding the description of the BGP neighbor, the error is:
A. BGP routers that support autodiscovery neighbors
B. BGP establishing neighbors must be configured with MD5 authentication
C. BGP needs to establish a UDP connection before establishing a neighbor
D. BGP to establish a neighbor relationship needs to first interact with the link state information
View answer
Correct Answer: ABCD
Question #28
A multi-protocol network, the topology is shown in the figure. Take a closer look at the topology, router R4 (in Areal) is introduced into the OSPF process via the routes learned by BGP. So what categories of LS4 will R3 advertise to zone 0?( Multiple choice questions).
A. 5 ?LSA
B. 7 ?LSA
C. 1 ?LSA
D. 4 ?LSA
E. 2 ?? ??
View answer
Correct Answer: ACE
Question #29
The following statement about IPSec VPN is correct ?qo
A. Two routers establish an IPSec VPN in brutal mode, so that the two devices can interact with a minimum of 4 messages to establish a tunnel
B. Brutal mode can support NAT traversal, while main mode does not support NAT traversal
C. The two routers can establish OSPF neighbor relations and exchange intranet routes through the IPSec VPN tunnel
D. The two routers establish IPSecVPN in main mode, and from the 5th packet (included), the payload's data will be encrypted
View answer
Correct Answer: D
Question #30
In the use of the CP protocol, the following description is correct?
A. The Eth-Trunk interface can be avoided by frequent oscillation interfaceeth- trunkllacppreemptenablelacppreemptdelaydelay-time by following command
B. Source A address can be configured for load sharing in an enabled link aggregation group with the following command: interface eth-trunk 110ad-balance src-dst-ip
C. A member interface can be removed from an enabled link aggregation group with the following command: interface GigabitEthernet0/0/1 shutdown interface GigabitEthernet0/0/1 undo eth-trunk 1 interfaceGigabitEthernet0/0/1undoshutdown
D. The member interface can be joined in the link aggregation group by enabling the following command: interface GigabitEthernet0/0/1 shutdown interface GigabitEthernet0/0/1 trunkport
View answer
Correct Answer: A
Question #31
CORRECT TEXTRegarding the tag space for MPLS, the description is incorrect
A. hen the penultimate hop LSR performs a label swap, if the swapped tag value is found to be
B. bove 1024 is the tag space shared by dynamic signaling protocols such as LDP, RSVP-TE, MP-BGP, etc
C. 6-1023 is a label control shared by static LSPs and static CR-LSPs
D. he tag is popped up by default and the message is sent to the last hop
View answer
Correct Answer: D
Question #32
Router R1 runs the OSPF protocol, use the "display ip routing-table" command to view the routing table of the router R1, the following about the OSPF in the routing table Is the information described correctly?
A. In the routing table, route table entries identified by the "OSPF" identifier can only be learned through LSAs of Type 3
B. In the routing table, the routing table entries identified by the "OSPF" identifier can only pass Class 1 LSA
C. In the routing table, the routing table entries identified by the "OSPF" identifier can be learned through the 1/2/3/5 LSA
D. In the routing table, the routing table entry identified with the "O_ASE" identifier can only be learned by routing introduction
View answer
Correct Answer: D
Question #33
The address resolution feature for NDP in the following description is incorrect?
A. When sending a neighbor request packet, the source address--is set as the link-local address
B. of the local interface Two types of ICMPv6 messages,
C. are used in the address resolution process, neighbor request and neighbor advertisement Address resolution implements the ability to resolve from IPv6 addresses to link-layer addresses
D. When sending a neighbor request packet, the destination address must be the multicast address of the neighbor's requested node
View answer
Correct Answer: A
Question #34
The following statement about static VXLAN tunnel configuration is correct?
A. A BD needs to create an NVE country, and when there are multiple BDs, multiple NVE interfaces must be created
B. An NVE interface can be associated with multiple VNls, so you can create only one NVE interface when there are multiple BDs
C. For a VXLAN tunnel, you need to create a corresponding NVE interface, in which you explicitly specify the source IP address and the destination IP address , so there are multiple VXLAN tunnels on the VTEP that must be vE interfaces The destination address of the VXLAN tunnel is specified in the
D. NVE interface, and multiple VXLAN tunnels can create only one NVE interface
View answer
Correct Answer: D
Question #35
In 6PE and 6VPE networking, no VPN instance needs to be created on PEs.
A. True
B. False
View answer
Correct Answer: A
Question #36
Between two directly attached devices that have established an IBGP neighbor, execute the shutdown command to close the interface of one of the devices. The BGP connection is not immediately disconnected.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #37
Regarding the difference between NSR and NSF, the correct one is?
A. The NSR must rely on a neighbor router to complete
B. Both NSR and NSF require a neighbor router to complete
C. NSF must rely on neighbor routers to complete
D. NSF does not require a neighbor router to complete
View answer
Correct Answer: C
Question #38
Which of the following options uses an alternate channel to enable communication between IPV6addresses?
A. ualStack
B. to4
C. SATAP
D. AT64
View answer
Correct Answer: BC
Question #39
The following statement about the alliance is correct?( Single choice questions).
A. The consortium divides an AS into sub-AS, and the alliance external AS still considers the consortium to be an AS
B. Subsystems within a consortium can use private AS numbers
C. Consortium can easily detect the routing loop within the AS because EBGP is running between the subAS
D. The subas number of the consortium, which by default notifies BGP peers outside the consortium
View answer
Correct Answer: D
Question #40
The following statement about the NSSA area is correct (multiple choice).
A. In the NSSA area where the OSPF neighbor sends hello packets, the N position 0, E within the option field Position 1
B. The NSSA zone must automatically generate a default LSA to access the external network
C. The NSSA zone generates a Category VII LSA to advertise external routing, and the FA address in the Category VII LSA acts to prevent loops
D. In the OSPF neighbor in the NSSA region sends hello packets, position 1 within the option field , position E
View answer
Correct Answer: D
Question #41
For telemetry data push, data can be transferred between devices and collectors using the TLS protocol. TLS must be configured for data encryption if data is pushed based on gRPC.
A. rue
B. alse
View answer
Correct Answer: A
Question #42
To implement the traffic filtering function, you can use trapp-filter or MQC, which can be called in more views than traffic-filter
A. FALSE
B. TRUE
View answer
Correct Answer: B
Question #43
When MPLS/BGP IP VPN is deployed, which of the following statements is incorrect about BGP route exchange between PEs and CEs?
A. AWhen PEs and CEs use BGP to exchange routing information, you do not need to import private network routes to BGP on PEs
B. BIn a Hub&Spoke scenario, when Hub-CE and Hub-PE run an IGP for communication, EBGP cannot be configured on Spoke-PE or Spoke-CE
C. CIn a scenario where PEs and CEs use BGP to exchange routing information, if two VPN sites have the same private AS number, the AS number replacement function can be used to replace the AS number in a received private network route with any specified AS number
D. DIn a CE multi-homing scenario, the BGP AS number replacement function may cause routing loops
View answer
Correct Answer: B
Question #44
In Huawei SD-WAN Solution, after a CPE goes online, it automatically selects an RR without the help of iMaster NCE-WAN.
A. rue
B. alse
View answer
Correct Answer: B
Question #45
Regarding the Stub region and the Totally Stub region of the OSPF protocol, the following statement is correct (multiple choice)
A. After modifying the original Stub area to a Totally Stub area, the number of LSAs in the LSDB of each router in the region will definitely be reduced
B. ASBR cannot be present in either the Stub zone or the Totally Stub zone
C. When you modify the original Stub area to a Totally Stub region, the number of LSAs propagating within the region will definitely decrease
D. If there are two ABR in the Totally Stub zone, each ABR sends an LS ID of 0000 to the router in the zone LSA
View answer
Correct Answer: BD
Question #46
In Huawei SD-WAN Solution, after a CPE goes online, it automatically selects an RR without the help of iMaster NCE-WAN.
A. True
B. False
View answer
Correct Answer: B
Question #47
IPv6 introduces the Solicited-Node address, which is described correctly below (multiple choice)
A. This is a specific address that is used for resolution in ARPv6 The MAC address
B. The Solicited-Node address on the router interface is automatically generated and can have multiple
C. If the Solicited-Node address is not configured , the router automatically generates one on each interface
D. IPv6 introduced the Solicited-Node address to support IPv6 multicast
View answer
Correct Answer: B
Question #48
SR is a technology that forwards data packets based on source IP addresses.
A. rue
B. alse
View answer
Correct Answer: B
Question #49
A network administrator runs the display telemetry destination command on a device to check information about a destination group that sampled data is sent to. The command output is as follows. Which of the following statements is incorrect?[~CE-telemetry-sensor-group-Sensor1]display telemetry destinationDest-name Dest-addr Dest-port State Vpn-name ProtocolDest1 192.168.56.1 20000 RESOLVED - GRPC
A. he destination group name is Dest1
B. he gRPC protocol is used for data push
C. he IP address of the destination group is 192
D. PN encapsulation is used for data push
View answer
Correct Answer: D
Question #50
Regarding the FTP protocol, which of the descriptions below is correct?
A. In FTP Passive mode, the client completes the initialization of the TCP session for control and data
B. In FTP Active mode, the server tells the client which port it expects to send data on by commanding "PORT"
C. FTP always uses a TCP session to transmit control information and data information
D. FTP always uses TCP port 20 to establish a data session, and ICP port 21 to establish control will always use
E. FTP TCP port 21 to establish a data session, TCP port 20 to establish a control session
View answer
Correct Answer: A
Question #51
After configuring the VLAN-based MAC address drift detection function, if the MAC address drifts, you can configure the actions of the interface according to your needs. Which of the following is not a configurable action?
A. Send an alert
B. The MAC address blocks
C. Interface blocking
D. Traffic filtering
View answer
Correct Answer: D
Question #52
Because BGP is an EGP routing protocol, BGP routing policies can only be deployed between EBGP neighbors, and routing policies between IBGP neighbors are not valid.
A. TRUE
B. FALSE
View answer
Correct Answer: B
Question #53
The following message about OSPFV3 is correct?
A. The Option field of the Hello and DD packets extends to 24-bit
B. LSR packets containing the full LSA header information for requesting an update to the LSA
C. The LSACK message contains LSA header information to confirm receipt of the LSU message
D. The Hello message must contain the interface ID of the sending interface
View answer
Correct Answer: ACD
Question #54
If a DR needs to be elected between multicast routers running PIM-SM to be responsible for the sending and receiving of source or member multicast data, which one is described correctly below for the DR election rule?
A. PIM routers with long interface masks are elected dr
B. Compare the DR priority first; With the same priority, you need to compare the interface IP addresses of the PIM routers to elect dr
C. PIM routers with small IP addresses are elected DR
D. DR priority values are elected DR
View answer
Correct Answer: B
Question #55
A switch joins a running stacking system after powering up, a behavior known as heap overlay.
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #56
XLAN uses BGP EVPN to establish a tunnel, what type of message is used? ( Single choice questions).
A. Typel
B. Type2
C. Type3
D. Type4E
View answer
Correct Answer: C
Question #57
Is the following description of ospf virtual links correct?
A. A virtual connection can be established in any area, after which it itself belongs to the region
B. The virtual connection ip is used as the link address
C. Virtual links can be used to solve the problem of zone 0 being segmented
D. The cost of a virtual connection is zero and is the optimal link
View answer
Correct Answer: C
Question #58
In the use of the CP protocol, the following description is correct?
A. The Eth-Trunk interface can be avoided by frequent oscillation interfaceeth- trunkllacppreemptenablelacppreemptdelaydelay-time by following command
B. Source A address can be configured for load sharing in an enabled link aggregation group with the following command: interface eth-trunk 110ad-balance src-dst-ip
C. A member interface can be removed from an enabled link aggregation group with the following command: interface GigabitEthernet0/0/1 shutdown interface GigabitEthernet0/0/1 undo eth-trunk 1 interfaceGigabitEthernet0/0/1undoshutdown
D. The member interface can be joined in the link aggregation group by enabling the following command: interface GigabitEthernet0/0/1 shutdown interface GigabitEthernet0/0/1 trunkport
View answer
Correct Answer: A
Question #59
What of the following actions can enable fast failure detection on multicast networks?
A. Shorten the Holdtime of Join/Prune messages
B. Reduce the interval at which the interface sends Hello messages
C. A PIM BFD session is established between neighbors
D. Reduce the interval between sending Join/Prune messages
View answer
Correct Answer: B
Question #60
What are the following correct statements about MUX VLANs?( Multiple select).
A. The Principal VLAN can communicate with all VLANs within the MUX VLAN
B. Each Separate VLAN must be bound to a Principal VLAN
C. Separate VLANs can communicate with all VLANs within a MUX VLAN
D. Each Group VLAN must be bound to a Principal VLAN
View answer
Correct Answer: ABD
Question #61
The display current-configuration command displays the running configurations in memory.
A. rue
B. alse
View answer
Correct Answer: A
Question #62
The BSR/RP mechanism described below describes the correct determination ?( Multiple choice questions).There can be multiple C-BSRs in the
A. PIM-SM domain, but only one BSR can be elected
B. BSR collects C-RP information by receiving packets of C-RP
C. BSR advertises BSR and C-RP information to all routers in the PIM-SM domain via flood bootstrap messages
D. A C-BSR can also collect C-RP information by receiving C-RP packets
View answer
Correct Answer: ABC
Question #63
When running OSPFv3 on a Huawei router, the OSPFv3 process automatically selects an interface address as the process router id
A. True
B. False
View answer
Correct Answer: B
Question #64
You have developed a third-party Portal authentication application and connected it to iMaster NCE-Campus to perform Portal authentication for Wi-Fi users. After connecting to Wi-Fi, a user will be redirected to the login page pushed by the authentication application when visiting any website for the first time. Comprehensive and Detailed In-Depth In the Huawei iMaster NCE-Campus solution, when using a third-party Portal authentication application, the following process occurs: After the Wi-Fi user connects to the network, any attempt to access a website for the first time triggers HTTP redirection. The user is redirected to the login page provided by the third-party authentication application. This mechanism ensures that the user authenticates before accessing external resources. The redirection behavior is consistent with captive portal functionality, which is standard for user authentication on Wi-Fi networks. Therefore, the statement is TRUE. Huawei HCIE Datacom Official Certification Guide Huawei iMaster NCE-Campus Authentication Guide Captive Portal Authentication Principles
A. TRUE
B. FALSE
View answer
Correct Answer: A
Question #65
The following description of the link state protocol is plausible?
A. CPU utilization is high and loops are easy to generate
B. Slow convergence and low CPU utilization
C. Fast convergence and low CPU utilization
D. Fast convergence and high CPU utilization
View answer
Correct Answer: D
Question #66
What is the wrong description of the function of OSPFv3 protocol authentication?
A. OSPFv3 can only establish a security alliance SA using manual mode
B. Huawei router OSPFv3 IPSec authentication can not only support transmission mode, but also support tunnel mode
C. OSPFv3 authentication relies on IPv6 packet authentication headers and encapsulationsecurity net load headers
D. The OSPFv3 protocol header removes the Type and Automation fields
View answer
Correct Answer: B
Question #67
BGP4+ is running between two routers, and the neighbor relationship is normal, but the BGP routingtable of the router on this side does not have a neighbor route entry.
A. he route entry in the peer BGP route table is non-optimal
B. he next hop address of the
C. GP route entry is unreachable
D. eer ignore is configured on the peer
E. he peer is configured with active-route-advertise
View answer
Correct Answer: ABD
Question #68
In the firewall hot standby scenario, heartbeat interfaces can be connected directly or through an intermediate device such as a switch or router.
A. rue
B. alse
View answer
Correct Answer: A
Question #69
Router R1 runs the OSPF protocol, use the "display ip routing-table" command to view the routing table of the router R1, the following about the OSPF in the routing table Is the information described correctly?
A. In the routing table, route table entries identified by the "OSPF" identifier can only be learned through LSAs of Type 3
B. In the routing table, the routing table entries identified by the "OSPF" identifier can only pass Class 1 LSA
C. In the routing table, the routing table entries identified by the "OSPF" identifier can be learned through the 1/2/3/5 LSA
D. In the routing table, the routing table entry identified with the "O_ASE" identifier can only be learned by routing introduction
View answer
Correct Answer: D
Question #70
If the Option field value in the 0SPFv3 Hello message issued by the router's GIgabit Ethermet0/0 interface is 0x000013, the following description is correct
A. The Gigabit/thernetO/0/0 interface of Router A adds IPv6 routing to compute
B. Router A's Gigabit/thernetO/0/0 interface belongs to the NSSA zone
C. Router A supports AS-An External-LSA flood
D. Router A is an OSPFv3 device with forwarding capability
View answer
Correct Answer: ACD
Question #71
When running OSPFv3 on a Huawei router, the OSPFv3 process automatically selects an interface address as the process router id
A. True
B. False
View answer
Correct Answer: B
Question #72
The following description of the TTL in the MPLS Header is correct:
A. A TTL that acts like an IP header and is used to prevent message loops
B. To control label distribution
C. Limit LSR
D. Control of upstream devices for label distribution
View answer
Correct Answer: A
Question #73
What are the following advanced features supported by BGP EVPN?
A. ARP broadcast suppression
B. VRRP overVXLAN
C. Multi - active gateway
D. WI - AN Qos
View answer
Correct Answer: ABCD
Question #74
When DLDP detects the presence of a one-way link in the fiber, the default actions of Huawei equipment include: the DLDP state machine migrates to the Disable state, outputs Trap information, and automatically sets the interface to a blocked state.
A. True
B. False
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Correct Answer: A
Question #75
In the laboratory network, the network is built according to the following topology diagram, SWI is the default configuration, and SW2 disables the switch STP function.
A. G0/0/2 for WI enters the Discarding state
B. W2 and G0/0/1 enters the Discarding state
C. WI's G0/0/1 enters the Discarding state
D. o interface is backed up for blocking
E. W2 G0/0/2 enters discarding state
View answer
Correct Answer: D
Question #76
Which of the following statements is correct about 6PE and 6VPE?
A. n 6VPE networking, IPv6 addresses of a CE can be reused
B. n 6VPE networking, no VPN instance needs to be created on PEs
C. n 6PE networking, IPv6 addresses of a CE can be reused
D. n 6PE networking, VPN instances need to be created on PEs
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Correct Answer: A
Question #77
The correct description of the scene shown in the following figure is:
A. LSDB
B. R1, which exists in both Level-1 and Leve-2, can ping the interface address of R2 loopback0
C. R there is a route to R2 loopback0 10022/32
D. No neighbor relationship can be established between R1 and R2
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Correct Answer: ACD
Question #78
Segment Routing (SR) is a technical architecture designed to forward data packets on a network based on the source routing paradigm. SR-MPLS, as its name suggests, is SR based on MPLS label forwarding.
A. rue
B. alse
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Correct Answer: A
Question #79
The following is an error in the OSPF routing calculation (single choice).
A. Compared to the PRC algorithm, the ISPF algorithm only calculates the changed leaf nodes when the route changes PRC algorithm to recalculate routes
B. When the first and second class LSAs on the network change, OSPF uses the ISPF algorithm to recalculate the routes The
C. OSPF router uses the FULL SPF algorithm to calculate all nodes in the network when initially calculating routes
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Correct Answer: A
Question #80
The basic header length of an IPv6 message is a fixed value.
A. TRUE
B. FALSE
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Correct Answer: A

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